public class Example5_1 {
    public static void main(String args[]) {
        Student zhang = new Student();
        zhang.age = 17;
        zhang.number=100101;
        zhang.showPeopleMess();
        zhang.tellNumber();
        int x=9,y=29;
        System.out.print("会做加法:");
        int result=zhang.add(x,y);
        System.out.printf("%d+%d=%d\n",x,y,result);
        UniverStudent geng = new UniverStudent();
        geng.age = 21;
        geng.number=6609;
        geng.showPeopleMess();
        geng.tellNumber();
        System.out.print("会做加法:");
        result=geng.add(x,y);
        System.out.printf("%d+%d=%d\t",x,y,result);
        System.out.print("会做乘法:");
        result=geng.multi(x,y);
        System.out.printf("%d×%d=%d\n",x,y,result);
    }
}

